METHOD FOR DETERMINING AN OPTIMAL RECORDING POWER AND A DISK DRIVE USING THE METHOD, CONCERNED WITH EXACTLY DETECTING AN OPTIMAL RECORDING POWER VALUE

摘要

PURPOSE: A method for determining an optimal recording power and a disk drive using the method are provided to determine a recording power corresponding to a gamma value 0 or a value near to 0 as a target recording power, and to multiply the target recording power by a constant smaller than 1 to determine as an optimal recording power. CONSTITUTION: A system controller changes a recording power in a predetermined area of a disk, and records a test signal(S110). The system controller reproduces the recorded test signal, and calculates gamma values corresponding to each recording power(S120). The system controller detects a target recording power value corresponding to a target gamma value having a condition that a gamma curve deflection is less than a predetermined value by a deflection of disk drive configuring units including the disk(S130). The system controller multiplies the target recording power value by a predetermined constant, and determines an optimal recording power(S140,S150).